MoLock
عالعربية Download

Any file, any format. As fast as your PC allows.

Right-click a file and pick a format — or drop a whole folder into the converter. MoLock suggests the right target, runs batches in parallel across your processor, uses your graphics card when it can, and skips re-encoding entirely when a format only needs re-packaging. Your files never leave the PC.

New in 3.0Free + PremiumBasic free · Pro with Premium · on your PC, offline

Download MoLock 3.0Open the dashboard
  1. 01How it works
  2. 02What it does
  3. 03Speed is the headline
  4. 04Privacy
  5. 05Dashboard & bot
  6. 06Limits
  7. 07Questions
  • Format families8
  • Free batch20FILES
  • Uploads0
  • Fastest path1ST

01 / 08How it works

Right-click. Pick. Done.

Simple conversions take one click; big jobs get a window with progress, presets and a report.

  1. 01Step 1/3

    Right-click or drop

    Each file type gets its own "Convert to" menu with smart suggestions — HEIC → JPG, DOCX → PDF, MKV → MP4.

  2. 02Step 2/3

    Choose quality or a preset

    "For sharing", "For printing", "Smallest" — or set quality, size and whether to keep or strip metadata yourself.

  3. 03Step 3/3

    Let it run

    Batches run in parallel sized to your CPU. Cancel anytime; the report shows before and after sizes.

02 / 08What it does

Hundreds of conversions. One calm window.

Built on industry-standard engines. Heavy engines download on demand as verified packs, so the app stays light until you need them.

  • Images

    JPG, PNG, WebP, AVIF, HEIC and more — resize, compress and convert in one go.

  • PDF

    PDF to images and back, split and merge.

  • Video

    MP4, MKV, MOV, WebM and GIF — with the graphics card's encoder when available.

  • Audio

    MP3, M4A, WAV, FLAC and more; extract the sound from a video.

  • Office documents

    Word, Excel and PowerPoint to PDF using Office or LibreOffice when installed.

  • Archives

    ZIP, 7Z and more — pack, unpack and convert between them.

  • Text & encodings

    Fix garbled Arabic text files by converting their encoding.

  • Batches & presets

    Whole folders at once, saved presets, keep or strip metadata.

03 / 08Speed is the headline

The fastest path, picked for you.

Before converting, MoLock checks whether the job can be done without re-encoding, whether your graphics card can help, and how many jobs your processor can run at once.

  • No re-encode when possibleChanging MKV to MP4 often just re-packages the same video — near-instant and with zero quality loss.
  • Graphics-card encodersModern graphics cards have dedicated video encoders; MoLock uses them when present.
  • Parallel, CPU-awareBatches run as many jobs as your cores allow, without freezing the PC.

04 / 08Privacy

Your files stay on your PC.

Unlike online converters, nothing is uploaded. The only download is an engine pack the first time you need it — verified before it's used.

  • Nothing uploaded

    Conversion happens entirely on your PC; it even works offline once a pack is installed.

  • Verified packs

    Each engine pack's size and fingerprint are listed in MoLock's signed update information and checked before install.

  • Strip metadata

    Remove location and camera details from photos before you share them.

On your PC only

Converted locally

  • Your files and their contents
  • Presets and history of jobs
  • Before/after reports
Never uploaded

Stays with you

  • File contents
  • File names
  • Photos' location data
What the service sees

Only for packs

  • That a pack was downloaded
  • Which pack and version
  • Your plan, for pro packs

What each feature stores — privacy policy

05 / 08Dashboard & bot

Right where your files are. In Explorer.

The converter lives in the right-click menu and in MoLock's Tools. Pro packs unlock automatically when your account has Premium.

  • A menu per extension with the most useful targets first.
  • Engine packs download on first use, with progress and a size shown up front.
  • Pro packs (video, audio, office, ebooks), presets and batches over 20 files need Premium; basic conversions are free.

Dashboard first: how it all fits together

06 / 08Limits

Exactly what it does. And what it doesn't.

  • Office needs Office

    Office conversions use Microsoft Office or LibreOffice installed on your PC.

  • Some image formats need Windows codecs

    HEIC and AVIF depend on the image extensions installed in Windows.

  • Speed depends on your hardware

    Graphics-card encoding is used only when your card supports it; otherwise the processor does the work.

  • Packs download once

    The first video or audio job needs internet to fetch its pack.

07 / 08Read more

In-depth guides. In plain words.

08 / 08Questions

Pro converter

All questions

Which formats can MoLock convert?

Free: images (including HEIC, WebP and AVIF when Windows supports them), PDF basics, text and archives. With Premium: video, audio, office documents and ebooks, presets and batches over 20 files.

Are my files uploaded?

No. Conversion happens entirely on your PC. The only download is an engine pack on first use, verified before it's installed.

Why are some conversions instant?

Some formats only need re-packaging, not re-encoding — MKV to MP4 often works this way — so MoLock picks that path automatically with no quality loss, and uses the graphics card when encoding is needed.

Free · no ads

Try it on your PC today.

Windows 10 & 11 · works without an account; the dashboard is optional and free

Download MoLock — freeFree & Premium
Download MoLock — free